摘要
利用电视经纬仪的跟踪测量功能,以平行光管作为目标,实现了对摄像系统重要参量的精密测量.结合高准确度轴角编码器,可以对焦距进行标定.通过方位和俯仰方向的角位移,利用镜头畸变的轴对称性,可以确定光轴的位置.对整个视场进行抽样采点,得到一个畸变的网格场,通过拟合得到畸变系数,可以进行高准确度畸变修正.
The important parameters of camera system of TV theodolite have gotten with itself azimuth and pitching angle measure function. Camera focus can be measured through changing a little angle with constant target. Image center was gotten through comparing distances of target points in image because of symmetry of lens distortion. Through moving azimuth and pitching angle a distortion net of whole image was built. Then distortion model was set up with different models.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2007年第7期1369-1372,共4页
Acta Photonica Sinica
关键词
光学工程
电视经纬仪
摄像系统标定
畸变修正
Optical engineering
TV theodolite
Camera system calibration
Distortion correction
